Brooks Instrument 1250 & 1255 Sho-Rate Series Variable Area (VA) Flow Meters, commonly called rotameters, are a cost-effective solution used for flow indication of liquids and gases. The Brooks line of VA meters ensures measurement repeatability, which provides process stability and consistency. External power is not required for operation; therefore, they provide a fail-safe flow rate under any circumstance. VA meters are widely used in a diverse range of applications, from simple to sophisticated. Brooks VA meters can be provided with a variety of wetted materials for high pressure, high temperature conditions and hazardous locations.